英語單選集考試卷模_擬考試題_11114

1、姓名：_ 班級：_ 學(xué)號：_-密-封 -線- 英語單選集考試卷模_擬考試題考試時間：120分鐘 考試總分：100分題號一二三四五總分分?jǐn)?shù)遵守考場紀(jì)律，維護(hù)知識尊嚴(yán)，杜絕違紀(jì)行為，確?？荚嚱Y(jié)果公正。1、about one million years ago, the ice age began. the ice age was a long period of time in which four great glaciers pushed southward to cover almost all the upper half of north america, and then melted

2、 away. each glacier was a thick sheet of ice and snow that spread out from a centre near what is now hudson bay in canada. the winters were long, and the cool summers were too short to melt much of the ice and snow. the ever-growing sheet built up to a thickness of two miles at its centre.as all gla

3、ciers do, these great glaciers slid. they pushed down giant trees in their paths and scraped the earth bare of soil. many animals moved farther south to escape. others stayed and were destroyed.when winters of little snow came, the summer sun cut into the edges of the ice sheets. as the glaciers mel

4、ted, rocks, soil and other things that had mixed with the ice and snow were left. new hills, lakes and rivers were formed.the last of the great glaciers began its melting about 11,000 years ago. its melting formed the great lakes, these lakes are today little changed from their early sizes and shape

5、s. the largest of the north american river systems was also influenced by the glaciers. this is the mississippi-missouri ohio system. these rivers were miles wide at first. through the years they settled into their present channels.the main idea of this passage is _. （ ）a.the ice age was a long peri

6、od of timeb.great glaciers covered north america many years agoc.changes in climate helped to melt the glaciersd.how glaciers changed north america2、about one million years ago, the ice age began. the ice age was a long period of time in which four great glaciers pushed southward to cover almost all

7、 the upper half of north america, and then melted away. each glacier was a thick sheet of ice and snow that spread out from a centre near what is now hudson bay in canada. the winters were long, and the cool summers were too short to melt much of the ice and snow. the ever-growing sheet built up to

8、a thickness of two miles at its centre.as all glaciers do, these great glaciers slid. they pushed down giant trees in their paths and scraped the earth bare of soil. many animals moved farther south to escape. others stayed and were destroyed.when winters of little snow came, the summer sun cut into

9、 the edges of the ice sheets. as the glaciers melted, rocks, soil and other things that had mixed with the ice and snow were left. new hills, lakes and rivers were formed.the last of the great glaciers began its melting about 11,000 years ago. its melting formed the great lakes, these lakes are toda

10、y little changed from their early sizes and shapes. the largest of the north american river systems was also influenced by the glaciers. this is the mississippi-missouri ohio system. these rivers were miles wide at first. through the years they settled into their present channels.the author states t

11、hat all glaciers _. （ ）a.are two miles thickb.form frozen lakesc.are a million years oldd.move and slide3、about one million years ago, the ice age began. the ice age was a long period of time in which four great glaciers pushed southward to cover almost all the upper half of north america, and then

12、melted away. each glacier was a thick sheet of ice and snow that spread out from a centre near what is now hudson bay in canada. the winters were long, and the cool summers were too short to melt much of the ice and snow. the ever-growing sheet built up to a thickness of two miles at its centre.as a

13、ll glaciers do, these great glaciers slid. they pushed down giant trees in their paths and scraped the earth bare of soil. many animals moved farther south to escape. others stayed and were destroyed.when winters of little snow came, the summer sun cut into the edges of the ice sheets. as the glacie

14、rs melted, rocks, soil and other things that had mixed with the ice and snow were left. new hills, lakes and rivers were formed.the last of the great glaciers began its melting about 11,000 years ago. its melting formed the great lakes, these lakes are today little changed from their early sizes and

15、 shapes. the largest of the north american river systems was also influenced by the glaciers. this is the mississippi-missouri ohio system. these rivers were miles wide at first. through the years they settled into their present channels.from the information in this passage we know that _. （ ）a.glac

16、iers are destructiveb.all glaciers in the world move southwardc.the mississippi-missouri-ohio system is larger than it was before the ice aged.the great lakes are now smaller than they were before the ice age4、about one million years ago, the ice age began. the ice age was a long period of time in w

17、hich four great glaciers pushed southward to cover almost all the upper half of north america, and then melted away. each glacier was a thick sheet of ice and snow that spread out from a centre near what is now hudson bay in canada. the winters were long, and the cool summers were too short to melt

18、much of the ice and snow. the ever-growing sheet built up to a thickness of two miles at its centre.as all glaciers do, these great glaciers slid. they pushed down giant trees in their paths and scraped the earth bare of soil. many animals moved farther south to escape. others stayed and were destroyed.when winters of little snow came, the summer sun cut into the edges of the ice sheets. as the glaciers melted, rocks, soil an